Screening and genotyping of Mur blood group among voluntary blood donors in the population of Hezhou, Guangxi

Objective To screen the distribution frequency of Mur blood group among voluntary blood donors in Hezhou, Guangxi, and further analyze the molecular basis of of Mur antigen positive samples. Methods The Mur phenotype of voluntary blood donors in Hezhou was serologically screened using microplate method, and the distribution frequency of Mur antigens in different ethnic groups was analyzed. Genetic typing was performed on these positive samples with PCR-SSP method to verify the accuracy of the serological method, and the genetic background was sequenced and analyzed. Results Among 3 298 samples from voluntary blood donors in Hezhou, 432(13.10%, 432/3 298) were screened positive for Mur antigen, and PCR-SSP genotyping validation showed that all 432 samples were electrophoretic positive. Among them, the proportion of Han blood donors with positive Mur antigen was 12.79%(331/2 587), Yao ethnic group was 13.25%(64/483), Zhuang ethnic group was 16.51%(36/218), and no statistically significant difference was found i